From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8C981C0051 for ; Thu, 8 Oct 2020 15:47:59 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 7C27A86D03 for ; Thu, 8 Oct 2020 15:47:59 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VkrVAUGZP5gM for ; Thu, 8 Oct 2020 15:47:54 +0000 (UTC) X-Greylist: delayed 00:18:40 by SQLgrey-1.7.6 Received: from mail-qt1-f181.google.com (mail-qt1-f181.google.com [209.85.160.181]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 3243586CFC for ; Thu, 8 Oct 2020 15:47:54 +0000 (UTC) Received: by mail-qt1-f181.google.com with SMTP id c5so5475362qtw.3 for ; Thu, 08 Oct 2020 08:47:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=blockstream-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=Ui4ziDc0Zh///O95CYOepES/ksfo7wqJddAJENhEIWI=; b=L6iPjfxjdWVrtQUQAo0hRBBSFV14ELqH459GBqTpDOJZ76Ysj5XMsELh4WKFOrRU6A MeN/xctC8tEpiuwps9+q0Hlt7XPMouRcNd+2l626qgJQb5UWF9udu+NykHRz6rbbdHCk 9OEV/j5niokkR8I/OF4lwpMiwdlTvfg+wLY65g9T3Bbl4cjYVYRVxYI06MXsVxPerH6C 8uSWsTOojjcc4vI8LWPoWoMMj6/w3vAPJXUgOW2yjOT2NFkvVvgEGLWqBXOdDcIxf2G8 KMoY0EaSUxrCh/5hrHQQnGwgXa0061Z2kQii8UosonkMgq/btsvmTcAjGZd72icUeAFd JjgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=Ui4ziDc0Zh///O95CYOepES/ksfo7wqJddAJENhEIWI=; b=QtUOnyl+7Cm5PUI07zF+mer4s5y5+IR2vZPHvfpBWhNOPOiPFkZH0AKhn8hJDCM7ds AyJrolOLLCNinMCpYcm/z2Ni/Y7Rs/BGGBPL73EVF05ykiSHBTUYyN04yL32U2F7RoKS HuMIbQ7B0zybllGNTS6gir1rWnFO9vxnKHcjTsQyAomrHsUPrUjI3LWmBPmvNC9olV67 Mz3znkfN1YChackCDqNYB2elNGeFwL/CzXv85FP8eH4hh+Z+wG9VSjTDYua4208Zrkm7 kTRLncHBeTYFY0UGoI2h65W7gVFZOwgBzDoFv0LxzQy2UGQRW+7tLuJYx58hAJh2lGgE RwHA== X-Gm-Message-State: AOAM531MW9ZELnhQ1O0sPs/hFtVIwmcKm8dhoof8F72pzqkPzGv6Eah1 ouzMarTdULagRtjphn9K3QfnxWx/GZn/T1pGkb8DZ9rb9PA= X-Google-Smtp-Source: ABdhPJwffUJFDAggul574+DHAk6AmqCT0U3bwyhHqGxnb+rXjqk6is9XLDovo9by1oLimEC/bnyvou3PX/9l5A4PiqE= X-Received: by 2002:a37:495:: with SMTP id 143mr8622825qke.384.1602170518556; Thu, 08 Oct 2020 08:21:58 -0700 (PDT) MIME-Version: 1.0 References: <87imblmutl.fsf@rustcorp.com.au> <20201008145938.vrmm33f6sugdc7qm@ganymede> In-Reply-To: <20201008145938.vrmm33f6sugdc7qm@ganymede> From: "Russell O'Connor" Date: Thu, 8 Oct 2020 11:21:47 -0400 Message-ID: To: "David A. Harding" , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary="000000000000a0e7fd05b12a6427" Subject: Re: [bitcoin-dev] Progress on bech32 for future Segwit Versions (BIP-173) X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Oct 2020 15:47:59 -0000 --000000000000a0e7fd05b12a6427 Content-Type: text/plain; charset="UTF-8" On Thu, Oct 8, 2020 at 11:00 AM David A. Harding via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > Rather than go through that again, I'd prefer we use the > backwards compatible proposal from BIPs PR#945 and, if we want to > maximize safety, consensus restrict v1 witness program size, e.g. reject > transactions with scriptPubKeys paying v1 witness programs that aren't > exactly 32 bytes. > Adding some kind of relay policy rule would be easier than a consensus rule, and maybe effective enough. (This comment is not intended to endorse any one proposal over another.) > Hopefully by the time we want to use segwit v2, most software will have > implemented length limits and so we won't need any additional consensus > restrictions from then on forward. > --000000000000a0e7fd05b12a6427 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Thu, Oct 8, 2020 at 11:00 AM David A. Harding via bitcoin-dev= <bitcoin-dev@l= ists.linuxfoundation.org> wrote:
Rather than go through that again, I'd prefer w= e use the
backwards compatible proposal from BIPs PR#945 and, if we want to
maximize safety, consensus restrict v1 witness program size, e.g. reject transactions with scriptPubKeys paying v1 witness programs that aren't<= br> exactly 32 bytes.

Adding some kind of r= elay policy rule would be easier than a consensus rule, and maybe effective= enough.=C2=A0 (This comment is not intended to endorse any one proposal ov= er another.)
=C2=A0
Hopefully by the time we want to use segwit v2, most software will have
implemented length limits and so we won't need any additional consensus=
restrictions from then on forward.
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